Slope: A Measure of Steepness The slope of a line or surface tells you how steeply it rises or falls in terms of a ratio.
to find slope: rise/run (rise over run) Analyzing polygons with coordinates: Parallel lines Theorem-
In a coordinate plane, two nonvertical lines are parallel if and only if they have the same slope. Any two vertical lines are parallel Perpendicular lines Theorem-
In a coordinate plane, two nonvertical lines are perpendi9cular if and only if the product of their slopes is -1. Any vertical line is perpendicular to any horizontal line. Midsegments in the coordinate Plane:
Coordinates may be used to verify the conjectures about TRIANGLE and trapezoid midsegments that you made in the previous lesson.
The slope of a line or surface tells you how steeply it rises or falls in terms of a ratio.
to find slope: rise/run (rise over run)
Analyzing polygons with coordinates:
Parallel lines Theorem-
In a coordinate plane, two nonvertical lines are parallel if and only if they have the same slope. Any two vertical lines are parallel
Perpendicular lines Theorem-
In a coordinate plane, two nonvertical lines are perpendi9cular if and only if the product of their slopes is -1. Any vertical line is perpendicular to any horizontal line.
Midsegments in the coordinate Plane:
Coordinates may be used to verify the conjectures about TRIANGLE and trapezoid midsegments that you made in the previous lesson.
Equation for slope: y2-y1/x2-x1
To find midpoint- x1+x2/2 , y1+y2/2